Spark-arrester



N E. BULTMAN.

. SPARK ARRESTER.

Patented 0ct. 16, 1894.

INVENTOR %m W M M U.

UNITED STAT-ES PATENT OFFICE.

HENRY E. EULTM AN, OF OAK PARK, MINNESOTA.

SPARK-ARRES'TTER:

SPECIFICATION formingpart of Letters Patent No. 527,661; dated October16, 1894.

Application and May 16, 1 s9i.j senate. 511,4 7. (no modelal To all whomconcern): l i

Be it known that'I, HENRY E.BULTMAN,of Oak Park, in the county of Bentonand State of Minnesota, have invented a inew andlmproved Spark-Arrester,of which the following is a full, clear, and'exact description. I

My invention relates to" improvements in spark arresters such as areused on the smoke stacks of locomotives to prevent them from throwingsparks; and the object of my in vention is to produce a cheap and simplespark arrester, which may be conveniently fastened to the stack of alocomotive, which entirely closes the stack so'far as the emission ofsparks is concerned, but does not interfere with the draft.

My invention is particularly adapted for use on straw burning engines.Spark arresters which have beenused'with engines of this class have beenmade largely of gauze, somewhat after the manner of my invention, butthese arresters have burned out quickly, owing to the fact that'thesparks stick to the gauze, but my invention is provided with -a gauzedeflector for the sparks and also with a cleaning apparatus which may beeasily actuated and which effectually removes the sparks and thuspreserves the life of the arrester.

To these ends my invention consists of certain features of constructionand combinations of parts, which will be hereinafter described andclaimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification,

in which similar figures of reference indicate corresponding parts inall the views.

Figure 1 is a side elevation of the spark arrester, representing myinvention. Fig. 2 is a central vertical section of the same. Fig. 3 is asectional plan on the line 33 of Fig. 1; and Fig. 4 is a broken planview of the arrester.

The arrester is provided witha cylindrical base portion 10, made chieflyof gauze and adapted to be fastened tothe cylindrical portion of a smokestack, while the enlarged upper portion of the arrester, which will behereinafter described, is adapted to lie or be contained in the upper orfunnel shaped por tion of the stack.

The cylindrical part 10 of the arrester has a gauze body, which issupported on the vertical side bars, 11 and the circular cross bars 12-and 12, thelatterbeing'arranged at the bottomand provided with anoverlapping endhaving, perforations 13, see Fig. 1, to recei've afastening bolt 14 so that the bottom may be regulated. The bar or band12 has also meeting flanges'15, adapted to be bolted together so as toclamp ,the lower band or bar, and consequently the whole arrester to thesmoke stack-.;

The gauze portion of the lower part 10 of the arrester has a split onone side, and at this point one edge overlaps the other, as

shown at '16 in Fig. 3, so as to provide for its adjustment and adapt itto be readily fastened to the stack.

The side bars 11 of the arrester project above the. cylindrical portion10 and flare outwardly, as shown at 17 in Figs. 1 and 2, serving tosupport the top band 18 which is circular and carries the upper end ofthe ex terior screen 19 which ,.is funnel shape, as shown in thedrawings, and is doubled over the band 18 and formed into a dependingcone 20, the point of which comes directly over the center of thecylindrical portion 10 of the arrester, and thus the part 20 serves as adeflector to prevent the sparks from being thrown'out of the stack.

The screen 19 is at its lower end provided with a fastening band 21adapted to be clamped-to the part 10 of the arrester, and the band 21has meeting flanges 22 which are bolted together to hold the screen 19in place. It will be observed that there is no clear open passagethrough the arrester, and conse quently the sparks cannot escape, butthe mesh of the screen issufliciently coarse to permit a free passage ofsmoke.

The band 18 besides supporting the screen 19 serves as a support for thecleaner, and has adapted to be readily engaged by a poker, or otherimplement which the fireman may have handy, and the arm 27 projectsthrough and is held in a slide plate 29 which moves over a plate 30 onthescreen 19, the plate 30 having a longitudinal slot 31 therein toprovide for the lateral movement of the arm 27. It will be seen that bymoving the arm back and forth, the cleaner will be oscillated, the ring24: sliding in the hangers 23, and the bars 26 when thus moved, scrapethe sparks from the cone deflector 20.'

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. A spark arrester, comprising a cylindrical gauzecovered base, and a funnel shaped screen having its lower end secured tothe cylindrical base portion and its upper end formed into a dependingcone, substantially as described.

2. A spark arrester, comprising a lower cylindrical gauze coveredportion having means for attachment to a smoke stack and provided withupwardly projecting and outwardly in clinin g bars, a top band supportedon the bars, and an exterior funnel shaped screen having its bottomadapted for attachment to the cylindrical part of the arrester and itsupper part bent over the top band and formed into a depending deflectingcone, substantially as described.

3. Aspark arrester, comprising a lower cylindrical gauze covered portionhaving means for attachment to a smoke stack, a spraying screen securedto the cylindrical portion and terminating at the top in a dependingconical deflector, and a movable cleaner embracing the conicaldeflector, substantially as described.

4. The combination, with the gauze covered spark arrester having thedepending conical deflector. of the oscillating cleaner embracing thedeflector and comprising parallel rings and connecting bars,substantially as de- 5. The combination,with the screen covereddeflector having the supporting band at the top and the dependingconical deflector projecting through the band, of hangers secured to theband, a cleaner held to slide in the hangers and arranged to embrace thedeflec- HENRY E. BULTMAN.

Witnesses:

J. WILLIAMS, JOHN E. WHILT.

